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Plantain parser improvements #3469

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Plantain parser improvements #3469

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0e7bbee
Refactored card nubmer and balance
assasinfil Feb 20, 2024
68143e5
Podorozhnik refactor
assasinfil Feb 20, 2024
e4caab9
Balance fix and BSK card support added
assasinfil Feb 23, 2024
e08b4b3
Merge branch 'dev' into plantain
assasinfil Sep 21, 2024
f768e35
Merge branch 'flipperdevices:dev' into plantain
assasinfil Oct 3, 2024
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112 changes: 93 additions & 19 deletions applications/main/nfc/plugins/supported_cards/plantain.c
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Original file line number Diff line number Diff line change
Expand Up @@ -4,10 +4,21 @@

#include <nfc/nfc_device.h>
#include <bit_lib/bit_lib.h>
#include <datetime.h>
#include <nfc/protocols/mf_classic/mf_classic_poller_sync.h>

#define TAG "Plantain"

void from_minutes_to_datetime(uint32_t minutes, DateTime* datetime, uint16_t start_year) {
uint32_t timestamp = minutes * 60;
DateTime start_datetime = {0};
start_datetime.year = start_year - 1;
start_datetime.month = 12;
start_datetime.day = 31;
timestamp += datetime_datetime_to_timestamp(&start_datetime);
datetime_timestamp_to_datetime(timestamp, datetime);
}

typedef struct {
uint64_t a;
uint64_t b;
Expand Down Expand Up @@ -208,29 +219,92 @@ static bool plantain_parse(const NfcDevice* device, FuriString* parsed_data) {
bit_lib_bytes_to_num_be(sec_tr->key_a.data, COUNT_OF(sec_tr->key_a.data));
if(key != cfg.keys[cfg.data_sector].a) break;

// Point to block 0 of sector 4, value 0
const uint8_t* temp_ptr = data->block[16].data;
// Read first 4 bytes of block 0 of sector 4 from last to first and convert them to uint32_t
// 38 18 00 00 becomes 00 00 18 38, and equals to 6200 decimal
uint32_t balance =
((temp_ptr[3] << 24) | (temp_ptr[2] << 16) | (temp_ptr[1] << 8) | temp_ptr[0]) / 100;
// Read card number
// Point to block 0 of sector 0, value 0
temp_ptr = data->block[0].data;
// Read first 7 bytes of block 0 of sector 0 from last to first and convert them to uint64_t
// 04 31 16 8A 23 5C 80 becomes 80 5C 23 8A 16 31 04, and equals to 36130104729284868 decimal
uint8_t card_number_arr[7];
for(size_t i = 0; i < 7; i++) {
card_number_arr[i] = temp_ptr[6 - i];
}
// Copy card number to uint64_t
furi_string_printf(parsed_data, "\e#Plantain card\n");
uint64_t card_number = 0;
for(size_t i = 0; i < 7; i++) {
card_number = (card_number << 8) | card_number_arr[i];
card_number = (card_number << 8) | data->block[0].data[6 - i];
}

furi_string_printf(
parsed_data, "\e#Plantain\nNo.: %lluX\nBalance: %lu\n", card_number, balance);
// Print card number with 4-digit groups
furi_string_cat_printf(parsed_data, "Number: ");
FuriString* card_number_s = furi_string_alloc();
furi_string_cat_printf(card_number_s, "%lld", card_number);
FuriString* tmp_s = furi_string_alloc_set_str("9643 3078 ");
for(uint8_t i = 0; i < 24; i += 4) {
for(uint8_t j = 0; j < 4; j++) {
furi_string_push_back(tmp_s, furi_string_get_char(card_number_s, i + j));
}
furi_string_push_back(tmp_s, ' ');
}
furi_string_cat_printf(parsed_data, "%s\n", furi_string_get_cstr(tmp_s));
if(data->type == MfClassicType1k) {
//balance
uint32_t balance = 0;
for(uint8_t i = 0; i < 4; i++) {
balance = (balance << 8) | data->block[16].data[3 - i];
}
furi_string_cat_printf(parsed_data, "Balance: %ld rub\n", balance / 100);

//trips
uint8_t trips_metro = data->block[21].data[0];
uint8_t trips_ground = data->block[21].data[1];
furi_string_cat_printf(parsed_data, "Trips: %d\n", trips_metro + trips_ground);
//trip time
uint32_t last_trip_timestamp = 0;
for(uint8_t i = 0; i < 3; i++) {
last_trip_timestamp = (last_trip_timestamp << 8) | data->block[21].data[4 - i];
}
DateTime last_trip = {0};
from_minutes_to_datetime(last_trip_timestamp + 24 * 60, &last_trip, 2010);
furi_string_cat_printf(
parsed_data,
"Trip start: %02d.%02d.%04d %02d:%02d\n",
last_trip.day,
last_trip.month,
last_trip.year,
last_trip.hour,
last_trip.minute);
//validator
uint16_t validator = (data->block[20].data[5] << 8) | data->block[20].data[4];
furi_string_cat_printf(parsed_data, "Validator: %d\n", validator);
//tariff
uint16_t fare = (data->block[20].data[7] << 8) | data->block[20].data[6];
furi_string_cat_printf(parsed_data, "Tariff: %d rub\n", fare / 100);
//trips in metro
furi_string_cat_printf(parsed_data, "Trips (Metro): %d\n", trips_metro);
//trips on ground
furi_string_cat_printf(parsed_data, "Trips (Ground): %d\n", trips_ground);
//last payment
uint32_t last_payment_timestamp = 0;
for(uint8_t i = 0; i < 3; i++) {
last_payment_timestamp = (last_payment_timestamp << 8) |
data->block[18].data[4 - i];
}
DateTime last_payment_date = {0};
from_minutes_to_datetime(last_payment_timestamp + 24 * 60, &last_payment_date, 2010);
furi_string_cat_printf(
parsed_data,
"Last pay: %02d.%02d.%04d %02d:%02d\n",
last_payment_date.day,
last_payment_date.month,
last_payment_date.year,
last_payment_date.hour,
last_payment_date.minute);
//payment summ
uint16_t last_payment = (data->block[18].data[9] << 8) | data->block[18].data[8];
furi_string_cat_printf(parsed_data, "Amount: %d rub", last_payment / 100);
furi_string_free(card_number_s);
furi_string_free(tmp_s);
} else if(data->type == MfClassicType4k) {
//trips
uint8_t trips_metro = data->block[36].data[0];
uint8_t trips_ground = data->block[36].data[1];
furi_string_cat_printf(parsed_data, "Trips: %d\n", trips_metro + trips_ground);
//trips in metro
furi_string_cat_printf(parsed_data, "Trips (Metro): %d\n", trips_metro);
//trips on ground
furi_string_cat_printf(parsed_data, "Trips (Ground): %d\n", trips_ground);
}
parsed = true;
} while(false);

Expand Down